Valve-grinding tool



H, w. WOLF. VALVE GRINDING TOOL.

APPLICATION FILED MAY 17. 1919.

1,334,479 Patented Mar. 23, 1920.

T-5I -f- 4 lll/A iranienne: WM. wenn, or Mirironn, IOWA.

VALVE-samplers Toor.

Specification of Letters Patent.

` Patented Ma1-.2e,1e2o.

Application filed, May 17, 1919n Serial No. 297,851.

To all /w/om t may concern.'

Be it known that I, Hnnnnivr WM. lVoLr, a. citizen of the United States, residing at Milford, in the county ofDickinson and State of Iowa, have invented certain new and useful Improvements in Valve-Grinding Tools, of which the following is a specification, reference being hadto the accompanying drawings.

This invention relates to an improved valve grinding tool, particularly adapted for the valves of automobile motors.

The invention aims to provide a tool for this purpose, and particularly adapted for use in the place of vertical grinders.

Tt is a well known fact that certain of the valves of motors of automobiles, particularly those in which one of thel valves is under the dash or front part of the body, and another is only approximately two inches toward the front of the cylinder block and the space between the top of the cylinder block and the bottom of the dash is substantially iive inches, it has been found exceedingly difficult to use a `vertical valve grinder, to grind these two valves. Therefore, it is the aim of vention to provide a grinder of such a construction as to permit a ready access to these valves, whereby sufficient pressure may 'be applied on the grinder, in order to properly grind the valves to their seats, thereby eliminating the difficulties that are experienced in using a vertical grinder,

The invention further aims to provide a valve grinder including a frame that will position evenly on the motor, and one which will permit requisite force or pressure to be applied, whereby the valves may -be ground evenly and truly to their seats, thereby insuring their proper operations when the motor is in action. p

The invention further aims to provide a frame for the operating parts of the grinder, which is rectangular, including a horizontal portion, an end frame and a depending part for the reception of a vertical shaft which carries a valve engaging member, while the other end of"`the frame is provided with a downwardly depending leg, the length of which corresponds with the combined operations of the extension and the valve engaging member, whereby, when vthe valve engaging member is in engagement with the valve and the leg is resting upon the cylinder block of the motor, the horizontal part the present inof the frame will be maintained in a` true horizontal position, whereby the requisite pressure or force may be applied on the horizontal part of the frame and hold the valve to its seat, while it is being ground, so that it may have a' true ground joint with the seat. p

Thilo the design and construction at present illustrated and set forthis deemed preferable, it is obvious that asa result of a reduction of the invention to a more practical form for commercial purposes, the invention may be susceptible to changes and the right to these changes is claimed, provided they are comprehended within the scope of what is claimed.

'The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawingsand claimed.

In the drawings:

Figure l is a view in elevation of the improved valve grinding tool constructed in accordance with the invention and showing the same in position on the motor, the leg engaging the cylinder block, and the valve engaging member in engagement with the valve to be ground.

Fig. 2 is a perspective view of the improved valve grinding` tool.

Fig. 3 is a longitudinal sectional view.

Referring to the drawings, 1 designates a frame as a whole, and this frame comprises a horizontal portion 2, which has its opposite sides open as shown at 3 and is also provided with bearings Lland 5, in which a horizontal shaft G is journaled. lOne end of the frame includes a rectangular auxiliary frame part 7, which is integral with the horizontal portion 2. This frame part also has its sides open as shown. The portion 8 of the auxiliary frame part 7 has a bearing 9 for one of the extremeends of the shaft 6. The frame part 7 is provided with a depending portion 10 provided witha bore 11, in which a vertical shaft l2 is journaled. The lower end of the shaft l2 has fixed thereto by means of a transverse pin 13 a valve engaging tool 14. The tool 14 has downwardly depending` diametrically oppositely disposed lugs l5, which engage depressions 16 of the valve 17 of the motor. A beveled gear 18 is mounted upon the upper end of the shaft l2 and has an extension hub 19, through whicha transverse pin 2O extends,

' shaft 12. A beveled gear' 21 isA mounted site end of the shaft 6.

upon the shaft 6 in a position adjacent the portion 8 of the frame part 7 This beveled gear 21 has an extension hub 22, which receives a transverse pin 23, to hold the ,beveledVV gear 21 in position on the shaft 6.

It is to be noted that when the valve engaging tool 14C is disconnected from the shaft 12, the beveled gear 18 since it is in mesh with the beveled gear 21, prevents upward axial movement of the shaft 12. Owing to the transverse pin, and in view of the fact that the gear 21 is in mesh with the gear 18, axial movement of the shaft 6 is prevented,

that is in a direction toward the crank 24, which is secured by a pin 25 on the oppo- The end of the frame 2 adjacent the crank 24: is provided with a depending leg 26 provided with a foot 27.

It is obvious that when grinding the valve of the motor of a Ford automobile, that is the valves that are under the dash or the forward part of the body, the frame 2 may be disposed, whereby the frame part ,7 may entend under the dash or the forward part of the body, in order that the lugs 15 may engage the depressions of the valve. The other part of the frame 2 extends outwardly from under the dash or the front part of the body, and the foot 27 and the leg 26 rests upon the cylinder block. Obviously one hand of the operator may gripithe horizontal part of the frame 2, and apply considera-ble force or pressure, while with the other hand, revoluble motion may be imparted to the shaft 6, by means of the crank 24. It will be seen that when the shaft 6 is in motion, the beveled gear 21 will transmit its revoluble movement 'to the gear 18 and the shaft 12, and owing to the lugs 15 engaging the depressions of the valve, the valve will rotate with the shaft 12, in view of which the valve will attain a ground joint with its seat, in order that it may properly coperate with such seat during the operation of the motor.

The invention having been set forth, wh at is claimed as new and useful is:

In a valve grinder for motors, the combination with a frame'comprising a horizontal. body portion 4having an auxiliary open frame part at one end, said open frame part having a depending extension, of a vertical shaft in said depending extension and having its lower end provided with a valve engaging member, a horizontal. shaft mounted in the horizontal body part,l and having one end overlying` and extending beyond the vertical axes of the vertical shaft, the overlying end of the horizontal shaft and the upper end ofthe vertical shaft having gear connections, which are arranged in the 'auxiliary frame part, said gear connections acting to prevent axial movement of the shafts, the other end of the body portion having a depending leg, which, when the auxiliary open frame part engages under the dash of the body of the automobile, is adapted to rest and engage upon the cylinder block of the motor, whereby the hori` zontal body portion may be held in a horizontal position, so that pressure may be applied, whereby the valve may be rotated to attain a ground joint with its seat, and means for rotating the horizontal shaft.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

HERBERT WM. IVOL'F.

Witnesses LILLIAN B. Mrr'rs, C. E. MENOR.

Cir 

